Added meta tags for tour and issue pages

app/helpers/facebook_helper.rb

@@ -4,7 +4,7 @@ module FacebookHelper
   def facebook_meta_image
     resource         = get_resource
     @fb_meta_image ||= avatar_url(resource, :big) if resource.respond_to?(:avatar)
-    @fb_meta_image ||= asset_url('logo-mini.png')
+    @fb_meta_image ||= asset_url('fb-image.png')
 
     @fb_meta_image
   end

app/views/pages/tos.html.haml

@@ -1,3 +1,5 @@
+- set_meta_tags og: { description: 'Terms of Service' }
+
 - render 'tos_sidebar'
 
 .tos

app/views/pages/tour/abf-tour-project-description-1.html.slim

@@ -1,3 +1,5 @@
+- set_meta_tags og: { description: t('tour.meta_description') }
+
 .row
   .col-md-8.col-md-offset-2
     .row

app/views/pages/tour/tour-inside.html.slim

@@ -1,3 +1,5 @@
+- set_meta_tags og: { description: t('tour.meta_description') }
+
 .row
   .col-md-8.col-md-offset-2
     .row

app/views/projects/issues/show.html.slim

@@ -1,4 +1,7 @@
 - set_meta_tags title: [title_object(@project), @issue.title]
+- set_meta_tags og: { title:       @issue.title,
+                      description: truncate(@issue.body, length: 255) }
+
 == render 'submenu'
 == render 'projects/comments/markdown_help' if current_user
 

config/locales/tour.en.yml

@@ -1,5 +1,6 @@
 en:
   tour:
+    meta_description: "A distributed environment to build distributions, supporting all steps from managing source code to create ISO images."
     read_more: more...
     projects: Project Management
     sources: Source Code

config/locales/tour.ru.yml

@@ -1,5 +1,6 @@
 ru:
   tour:
+    meta_description: "Платформа разработки и управления жизненным циклом дистрибутивов: от исходного кода до ISO-образов."
     read_more: Читать далее...
     projects: Управление проектами
     sources: Исходный код